InputDecoration(
	<em>x</em>: 		<q>InputBorder</q>.<i>none</i>,			<em>// 无边框</em>
			<q>OutlineInputBorder</q>(		<em>// 外边线</em>
				<em>borderRadius: const BorderRadius.all(Radius.circular(10.0))</em>,
				<em>borderSide: const BorderSide(color: Colors.green,width: 1.0, style:BorderStyle.solid)</em>
			)
			<q>UnderlineInputBorder</q>(		<em>// 底边线</em>
				<em>borderRadius: const BorderRadius.all(Radius.circular(10.0))</em>,
				<em>borderSide: const BorderSide(color: Colors.green,width: 1.0, style:BorderStyle.solid)</em>
			)
)